Young Brewers lefty to undergo arthroscopic shoulder surgery

Brewers left-hander Aaron Ashby will undergo arthroscopic surgery on his left shoulder this week, manager Craig Counsell told reporters after Wednesday afternoon’s win over the Mets (relayed by Todd Rosiak of the Milwaukee Journal Sentinel). Ashby will be out for “significant time,” in the words of the skipper and might not return at all in 2023.

It’s a brutal development for one of the sport’s more promising young starters. Ashby, a fairly recent top prospect, threw 139 innings between 2021-22. The former fourth-rounder has only managed a 4.47 ERA but posted more intriguing underlying numbers. He’s punched out an above-average 27.1% of batters faced while keeping the ball on the ground on a huge 57.8% of batted balls. That rare combination of strikeouts and grounders led Milwaukee’s front office to invest in Ashby last summer.

The Brewers guaranteed him $20.5M through 2027 on a deal that contained club options through ’29. While it’s still possible for that relatively modest deal to pan out, Ashby hasn’t been able to contribute because of shoulder issues. He made just three starts after the extension before landing on the injured list with shoulder inflammation. That ended his 2022 campaign early. The problems unfortunately cropped back up this spring, as he was diagnosed with a small labral tear in mid-February.

Ashby and the club initially downplayed the long-term severity of the injury. He was expected to miss the first six weeks of the season, but his timeline now gets pushed back by another setback. The team hasn’t indicated whether Ashby suffered a more severe injury or if the initial issue simply hasn’t progressed as expected.

The Brewers will be able to transfer Ashby from the 15-day to the 60-day injured list whenever they have a need for a 40-man roster spot. Milwaukee still has a strong front five of Corbin Burnes, Brandon Woodruff, Freddy Peralta, Eric Lauer and Wade Miley. Depth options Ashby, Jason Alexander and Adrian Houser are all on the IL, though, leaving Milwaukee fairly thin behind the top group.

It’s an obviously suboptimal development early in the season and at least raises some question about Ashby’s ability to cement himself in the rotation over the longer term. Miley is only guaranteed to be around this year, while Burnes and Woodruff are on track for free agency after the 2024 season. There’s surely still hope Ashby can join Peralta as longer-term impact starters, but he’s now in danger of missing his entire age-25 campaign.